document.write( "Question 832649: Hello, i need help with this question:\r
\n" ); document.write( "\n" ); document.write( "Find the value of a for which the equation x^2 -5x +a has exactly one root. \r
\n" ); document.write( "\n" ); document.write( "here's what i've tried so far:
\n" ); document.write( "a= -x^2 +5x
\n" ); document.write( " = -x(x -5)\r
\n" ); document.write( "\n" ); document.write( "i dont know if that is the correct answer.
\n" ); document.write( "Thank you in advance.
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Algebra.Com's Answer #502126 by josgarithmetic(39630)\"\" \"About 
You can put this solution on YOUR website!
Discriminant is zero.
\n" ); document.write( "\"x%5E2-5x%2Ba\", has discriminant, \"%28-5%29%5E2-4%2A1%28a%29\", and you want to equate that with zero. Then, solve for a.
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